Power take-off for food mixers



Jan. 16, 1940. w. B. KOCHNER 2,137,272

POWER TAKE-0FF FDR FOOD "IXERS Filed April 24, 1939 ATTORNEY .5

Patented i... 16, 1940 2,137,272

UNITED STATES PATENT OFFICE 2,187,272 POWER TAKE-OFF FOR FOOD MIXERS William Bernalilixochfle, St. LollisitMoq alllgm- Knapponarc ompany, Louis. Ma, a corporation of Missouri Appllcatioh April 24, 1939, Serial No. 239,701

0 Claims. ((124-428) An object of my present invention is to prothe mixer shafts I6 is provided with a worm gear 'vide a power take-oif for food mixers and the 22 meshing with the worm l2. like which is simpleand inexpensive to manu- The lower ends of the mixer shafts l6 and facture and provides a very compact arrangement II are provided with suitable clutch or connect- I of step-down gearing between the motor shaft ing collars 23 adapted to receive the usual type 6 1o mixer, the parts of the gearing structure being reamer in the usual manner. 10 so arranged that they can be contained in a Between the bearings l8 and 20 I provide a with one end of the mixer motor. naled therein and its inner end is provided with Still another object is to provide the gearing a worm gear 23. Beyond the worm gear 28, so designed and mounted in the casing that the power shaft 21 is journaled in a bearing 29 II the desired low speed of a power shaft can be of the inner end plate l5. secured from a relatively high speed motor shaft The outer end of the power shaft 21 is slotted with mixer shafts being driven by the gearing as at 30 and extends into a socket 3| of the at an intermediate speed. casing l3. The socket 3| is adapted to receive The foregoing are among the main objects of a boss 32 of a tool 33 to be operated by the power this invention which consists of certain novel shaft. By way of illustration I show a power features of construction and combination of parts driven food chopper as the tool 33. descri ed with reference to the accompanying The tool 33 has a shaft 34 adapted to be driven drawing and then claimed, having the above by the power shaft 21. A blade 35 on the end merals refer to like parts throughout the several 21 and 34 in operative connection with each different views thereof: other.

a Figure 1 is a side elevation of my power take- For transmitting power to the shaft 21 I prooif mounted on a food mixer motor and having vide a pinion 3'! on the mixer shaft It. It meshes a power driven food chopper associated therewith a gear 38 on a counter-shaft 39. The counwith. ter-shaft in turn has a worm tooth l0 meshing Figure 2 is an enlarged sectional view on the with the worm gear 28. The lower end of the g line 2-2 of Figure 1; and counter-shaft 391s journaled inabearing 4| while Figure 3 is an inner end elevation of the power the upper end is journaled in the bearing I 9. The take-ofl per se with the inner end plate rebearings l8, I9, 20, 2|, 26 and 4| are formed as moved and the motor shaft shown in vertical bosses in the casing l3 and suitably bushed. cross section. By arranging the mixer shaft l6 and I1 inter- On the accompanying drawing I have used mediate the socket 3| and the worm gear 28 I the reference numeral III to indicate a supportprovide a compact arrangement which enables ing arm of a food mixer and the character M the use of the counter-shaft 39 as a step-down to indicate a mixer motor. The motor M may connection between one of the mixer shafts and be of electric or other suitable type and includes the power shaft. The arrangement described 5 a motor shaft l2 having a worm tooth cut in to makes it possible to hold the length of the casthe periphery thereof. ing 3 and also the diameter thereof to a mini- The motor shaft i2 projects into a casing l3 mum so that it does not present an overbalanced which is secured to one end of the motor M as appearance when associated with the motor M by screws l4. Interposed between the motor as illustrated in Figure 1, yet I provide within a and the casing I3 is an inner end plate IS. the casing l3 all the necessary gears for operapair of mixer shafts l6 and II are journaled ating the power shaft at a slow speed and the in bearings |3, |3, 2|! and 2| of the casing I3. mixer and juicer shafts at an intermediate speed These bearings are arranged to space the mixer between the power shaft and the motor shaft shafts l6 and I1 laterally from each other and speeds. on opposite sides of the motor shaft l2. One of Formal changes may be made in the Specific embodiments of the invention as above described without in any way and substance of the broad invention, the scope of which is commensurate with the appended claims.

What I claim as my invention is: v

1. In a power take-off for food mixers, a casing adapted to be mountedon one end of a mixer motor, a motor shaft projecting from the motor and entering said casing, said motor shaft having a worm within said casing, a pair of spaced mixer shafts journalled in said casing, said mixer shafts being arranged in a plane at substantially right angles to the axis of said motor shaft and being geared together, a worm gear on one of said mixer shafts meshing with said worm, a power shaft journalled in said casing and arranged substantially parallel to said motor shaft, said casing having a socket currounding said power shaft outwardly relative to the mixer shafts and adapted to receive a boss of a tool to be operated by said power shaft, a worm gear on said power shaft located inwardly relative to said mixer shafts and a counter-shaft extending substantially parallel to one of said mixer shafts, being geared thereto and having a worm meshing with the worm gear of said power shaft.

2. In a power take-off of the class described, a casing, a motor shaft entering said casing, said motor shaft having a worm within said casing, a pair of spaced mixer shafts journalled in said casing, said mixer shafts being geared together, a worm gear on one of said mixer shafts meshing with said worm, a power shaft journalled in said casing, and arranged between said mixer shafts with the axis of said power shaft at right angles to a plane passing through the axes of said mixer shafts, a worm gear on said power shaft located inwardly relative to said mixer shafts and means for operating said worm gear comprising a worm meshing with said worm gear of said power shaft, said last mentioned worm being geared to one of said mixer shafts.

3. In a power take-ofl for food mixers, a casing adapted to be mounted end to end on a mixer motor, a closure plate for the adjacent ends of said casing and mixer motor, a motor shaft projecting from the motor and entering said casing, a pair of spaced mixer shafts journalled in said casing and geared together, a worm gear on one of said mixer shafts meshing with said worm, a power shaft having one end journalled in said casing and its other end journalled in said closure plate, a worm gear on said power shaft and a counter-shaft extending substantially parallel to one of said mixer shafts, being geared thereto departing from the spiritand having a worm meshing with the worm gear of said power shaft.

4. In a power take-off for food mixers, a casing mounted on one end of a mixer motor, a motor shaft projecting from the motor and. entering said casing, a pair of spaced mixer shafts journalled in said casing, said mixer shafts being arranged in a plane at substantially right angles to the axis of said motor shaft and being geared together, one of said mixer shafts being operatively connected with said motor shaft, a power shaft journalled in said casing and arranged substantially parallel to said motor shaft, a worm gear on said power shaft and a counter-shaft geared to one of said mixer shafts and having a worm meshing with the worm gear of said power shaft.

5. In a power take-off forfood mixers, a casing adapted to be mounted on one end of a mixer motor, a motor shaft projecting from the motor and entering said casing, said motor shaft having a worm within said casing, a pair of spaced mixer shafts journalled in said casing intermediate the inner and outer ends thereof and arranged transversely of the casing, intermeshing gears on said mixer shafts, a worm gear on one of said mixer shafts meshing with the worm of said motor shaft, a power shaft, a bearing therefor between said mixer shafts and arranged substantially parallel to said motor shaft, means at the outer end of said power shaft to connect with a tool to be driven thereby and means at the inner end thereof for operatively connecting the power shaft to one of said mixer shafts, said last means including a counter-shaft having a worm, a worm gear on the inner end of the power shaft meshing therewith and gears on the counter-shaft and one of said mixer shafts and meshing with each other.

6. In a device of the class described, a casing adapted to be mounted on one end of a motor, a motor shaft projecting from the motor and entering said casing, a pair of spaced mixer shafts journalled in said casing intermediate the inner and outer ends thereof, intermeshing gears on said mixer shafts, means for driving one of said mixer shafts from said motor shaft, a power shaft, a bearing therefor between said mixer shaft and means for operatively connecting the power shaft to one of said mixer shafts, said last means including a counter-shaft having a worm, a worm gear on the inner end of the power shaft meshing therewith and gears on the counter-shaft and one of said mixer shafts and meshing with each other.

WILLIAM BERNARD KOCHNER. 

